Maybe it is the monitor that I am using...I do see a difference more so in the symbol that shows up on the computer monitor in the comparisons, but I am not sure what I am supposed to be concluding from the comparison.
davwaym wrote:
Maybe it is the monitor that I am using...I do see a difference more so in the symbol that shows up on the computer monitor in the comparisons, but I am not sure what I am supposed to be concluding from the comparison.
help please.....
It is the reflection of the light bulb off the sensor projected onto onto the filter. That is why it is greenish - the sensor reflects in the green.
kenyee wrote:
Interesting that the reflection has the shape of a circle w/ a line through it and a halo.
I'd also like to see what a B&W MRC UV filter looks like...
I've owned a few Hoya filters in the past, before I learned not to use filters, and some of the multi-coated ones (I forget the specific designations, but I think I had HMC or S-HMC) weren't coated on the back surface, which you'd almost think would be more important than an anti-reflective coating on the front surface. I replaced them with B+W's MRC filters, but I don't know why, as I still haven't used any of them.
sjms wrote:
gee i can make that happen with B+W too.
Maybe that's the point, he's showing the higher quality filter still will yield unwanted reflections etc.
....and my point-reason not to use them, regardless of brand. You're adding 2 add'l flat surfaces by
threading on a UV and no good can come from that. I understand severe usage protection but randomly
slapping one of these on a fresh out of the box lens has it's penalties.
Widely known about the quality of filters, and published on the Hoya site...worst among the Hoyas is the Multicoated at 93-94% transmission, next best is HMC at 97% transmission, then SHMC at 99.7% transmission. Less well known is the the 'digital' Pro filter coatings are LESS effective than the SHMC. B+W has 99.6% transmission.
I thought the picture was kind of self-explained so I didn't explain them further (only now I see the typo as the 3rd shot should be "HOYA DMC", not "HMC DMC"). The first shot was w/o filter. The rest 3 are: HOYA HMC SUPER UV(0), HOYA DMC protector & HOYA HMC UV(0). I would like to clarify that these are the only MC from HOYA and they are all MC on both sides. The difference between HMC SUPER & HMC is that their transmission are 99.7% & 97%. The DMC transmission is unknown as it is never made public by HOYA. Just for comparison, Pentax SMC is 99.8%, B+W MRC is 99.6%. Unfortunately I don't have any MRC filters so I cannot compare. However, I believe the practical difference between HMC SUPER and MRC is that the latter is easier to clean. All HOYA MC filters are known to smear easily and difficult to clean using the typical methods.
wlachan wrote:
I thought the picture was kind of self-explained so I didn't explain them further (only now I see the typo as the 3rd shot should be "HOYA DMC", not "HMC DMC"). The first shot was w/o filter. The rest 3 are: HOYA HMC SUPER UV(0), HOYA DMC protector & HOYA HMC UV(0). I would like to clarify that these are the only MC from HOYA and they are all MC on both sides. The difference between HMC SUPER & HMC is that their transmission are 99.7% & 97%. The DMC transmission is unknown as it is never made public by HOYA. Just for comparison, Pentax SMC is 99.8%, B+W MRC is 99.6%. Unfortunately I don't have any MRC filters so I cannot compare. However, I believe the practical difference between HMC SUPER and MRC is that the latter is easier to clean. All HOYA MC filters are known to smear easily and difficult to clean using the typical methods....Show more →
I have seen information for the Hoya Digital that shows no better transmission than the Hoya HMC, at 97% ! 'For digital' BS marketing at work once again. The new Hoya HD has 99.35%
